You grab the bar of soap and quickly use it to draw a picture of
yourself on the window. Excited you wait
and wait some more. Nothing
happens. You begin to wonder what you
are supposed to do. Then it occurs to
you, a self-portrait is a drawing of
yourself! A portrait is a drawing of someone else! As this realization comes to you your wallet plops onto the floor and spills a quarter which rolls into a dark corner and through a crack in the wall where it will never be found again (subtract $0.25 from your wallet).
